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一、前言混合冷剂制冷是对单一纯组份制冷和阶式制冷而言.热力学分析表明,在天然气液体回收和液化天然气装置上使用混合冷剂制冷,改善了能量的利用,不仅效率高、简单、而且易于控制和实现整个工艺操作的最佳化. 自第一套混合冷剂制冷循环装置于六十年代末在利比亚建成以来,混合冷剂的工艺流程和设备制造有了很大的发展.美国气体及化学产品公司、西德林德公司和法国液态空分公司在液化天然气装置的方案设计上,都采用混合冷剂制冷流程.目前世界上已建成几十套采用混合冷剂制冷的循环装置,并已投入使用. 混合冷剂
I. INTRODUCTION Mixed refrigerant cooling is concerned with single pure component refrigeration and cascade refrigeration. Thermodynamic analysis shows that the use of mixed refrigerant refrigeration in natural gas liquid recovery and liquefied natural gas installations improves the utilization of energy not only with high efficiency, Simple and easy to control and optimize the overall process operation Since the first mixed refrigerant refrigeration cycle was completed in Libya in the late 1960s, there has been a great development in the process and equipment manufacturing of mixed refrigerant The American Gas and Chemical Products Company, West Germany and France Liquid Air Separation Company all adopt the mixed refrigerant refrigeration process in the design of the LNG plant. There are dozens of sets of refrigerants in the world that have been mixed refrigerant Circulation device, and has been put into use